Cable exploits device and its cutter head
Technical field
The utility model is related to electric cable fitting processing apparatus technical field, and in particular to a kind of cable exploitation device and its
Cutter head.
Background technology
At present, high voltage power cable in an installation between joint and rely primarily on technical staff during cable termination and use electrician
The instruments such as knife are made by hand, because power cable includes conductor wire core, insulating barrier and semi-conductive layer from inside to outside etc.
A problem the most prominent is to cause the insulating barrier of cable to damage when cutting stripping cable semi-conductive layer in sandwich construction, manufacturing process
Bad, exploitation level depends on the operation level of construction technical staff.Drawn according to the analysis in the past to cable fault, it is big absolutely
Most failure causes, which are that semi-conductive layer exploitation is uneven, causes insulation harm, or to residue in half on surface of insulating layer after exploitation
There is the uneven insulation failure for causing local electric field strength to distort and triggering such as local crowning, spine, therefore electricity in conductive layer
Cable cut broach tool quality and technical staff cable is cut broach tool service condition close relation partly leading for power cable
Electric layer cuts stripping quality, affects the normal of cable and uses.
Such as Chinese patent literature CN102623932A discloses a kind of high-tension cable external shielding layer stripping off device, including phase
To the first grip block and the second grip block of setting, first grip block is provided with bark knife, second grip block it is interior
Side is provided with smooth surface roller bearing and helicoid roller bearing side by side, and first grip block and second grip block are connected by attachment means
Connect, the edge of a knife of bark knife is peaked on the periphery wall of semi-conductive layer with deflecting slightly, and head into 1mm or so, to ensure clockwise
The cutter of rotation can drive the edge of a knife to advance along cable axial screw, peel off semi-conductive layer helical form, and in surface of insulating layer
Formed along the axially extending spiral lamination of cable, the edge of a knife of the bark knife used in the prior art is common straight blade, this
The spiral lamination that blade is formed in surface of insulating layer is planted, each lines is clinoplain corresponding with straight blade, two neighboring line
Overlapping between road forms the sharp protrusion close to 90 degree, easily triggers insulation failure.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome the cutter head of cable exploitation device in the prior art to hold
Easily cause surface of insulating layer formation local crowning, spine and the defect for triggering cable insulation failure, thus provide it is a kind of reduce it is exhausted
Edge layer surface local crowning, the cutter head of spine formation.
Further provide for a kind of cable exploitation device with above-mentioned cutter head.
The technical solution adopted in the utility model is as follows:
A kind of cutter head, cutter head end is provided with blade, and cutter head root is wholely set with the cutter head end, and the blade includes
Positioned at the blade body at middle part and located at the blade body length direction two ends, towards face where the blade body
The curved edge that the same side is bent in opposite directions, and the intersection point of curved edge described in two and the tangent line of the blade body junction, are located at
The blade body on the whole or place face the opposite side relative to the curved edge, the intersection point be located at the knife
Face where sword body relative to the curved edge opposite side when, the projection in the intersection point towards the blade body direction is fallen into
Onto the blade body.
The blade body is linear, is connected smoothly with curved edge described in two.
The blade body be with curved edge described in two towards consistent arc line shaped, the blade body with it is curved described in two
Sword connects to form arcuate blade.
The radian of the arcuate blade is no more than pi/2.
The arcuate blade is axially symmetric structure perpendicular to the end face of length direction, and the end face includes length direction two ends phase
The inner arc and outer arc connected, the radian of the outer arc is less than the radian of the inner arc.
The inner arc is connected by two straight lines parallel with the axis of the end face respectively with the two ends of the outer arc
Connect.
The outer arc of the arcuate blade extends to form head base surface along curved surface where it towards the cutter head root, the inner arc
Extend towards the cutter head root and the inner arc gradually increases to form head top surface to the thickness of the cutter head root, even
Two straight lines for connecing the inner arc and the two ends of the outer arc are respectively facing the cutter head root extension, form two cutter head sides
Face, the cutter head side connects the head top surface and the head base surface.
The head top surface is the curved surface seamlessly transitted.
A kind of cable exploits device, including:Knife rest, and above-mentioned cutter head, the cutter head root are arranged on the knife rest, institute
Curved edge is stated to set suitable for dorsad cable, so that the blade body is supported in the peripheral outer wall face of the cable, and it is described
The axis angle of the center line of the blade surface of curved edge and the cable is acute angle.
The peripheral outer wall face of the cable is semi-conductive layer.
Technical solutions of the utility model, have the following advantages that:
1. the cutter head that the utility model is provided, cutter head end is wholely set with cutter head root, cutter head end is provided with blade, knife
Sword includes the blade body and the curved edge located at blade body length direction two ends positioned at middle part, and two curved edges are towards knife
The same side in face is bent in opposite directions where sword body, and the friendship of curved edge described in two and the tangent line of the blade body junction
Point, positioned at the blade body on the whole or place face the opposite side relative to the curved edge, the intersection point position
Where the blade body face relative to the curved edge opposite side when, the intersection point is towards the blade body direction
Projection is dropped on the blade body, and when cutting the semi-conductive layer of stripping cable, axial screw feed of the cutter head along cable is described
Blade is in the surface of insulating layer formation shape spill tool marks consistent with cutting edge shape, and two neighboring spill tool marks are intersecting to be set, with
Ensure semi-conductive layer cuts stripping completely, and the spill tool marks include the tool marks that blade body is cut out, and two curved edges are cut out
Curved tool marks, feed velocity can be controlled during feed with ensure two neighboring spill tool marks curved tool marks intersect,
And can by control point of intersection of the depth of cut to ensure two curved tool marks two tangent lines angle as obtuse angle, Huo Zhe
Feed velocity can be controlled during feed to ensure the curved tool marks of a spill tool marks and the blade of another spill tool marks
The tool marks that body is cut out intersect, and can ensure the tool marks that curved tool marks are cut out with blade body by controlling depth of cut
Angle be obtuse angle, so as to reduce the raised acuity of surface of insulating layer, the curve of curved edge is gentler, two curved tool marks phases
Hand over the angle formed more to tend to 180 degree, effectively alleviate the influence caused by the sharp protrusion and spine of cable insulation layer surface,
The incidence of reduction insulation failure, is conducive to the normal operation of power cable.
2. the cutter head that the utility model is provided, blade body is towards consistent arc line shaped, the blade with two curved edges
Body is connected to form arcuate blade with curved edge described in two, the surface of insulating layer formation arc tool marks after exploitation, due to arcuate blade
Upper each point curvature is identical, is easy to processing and fabricating, and to make to cut stripping operation process simpler easy to operate for the setting of arcuate blade, and by
It is continuous arc line shaped in blade, the right angle or acute angle spine caused is intersected in the absence of straight sword, it is only necessary to control feed velocity to ensure
Two neighboring arc tool marks intersect, and by control depth of cut ensure two arc tool marks intersections angle be obtuse angle i.e.
Can, effectively alleviate the influence that the sharp protrusion and spine of cable insulation layer surface are caused, reduction insulation mortality.
3. the cutter head that the utility model is provided, the radian of its arcuate blade is no more than the arc tool marks of pi/2, now two arcuate blades
The tangent line angle of intersection is more than 90 degree, therefore only needs control feed velocity to ensure that two neighboring arc tool marks intersect, without
Control depth of cut is the effect that reduction cable insulation layer surface spine or the acuity of projection can be achieved, and operation more facilitates
Fast.
4. the cutter head that the utility model is provided, its arcuate blade is axially symmetric structure, the end perpendicular to the end face of length direction
Face includes the inner arc and outer arc that length direction two ends are connected with each other, and radian of the radian less than inner arc of outer arc, i.e. arcuate blade
Thickness by centre gradually increase to two ends, this set both ensure that the sharp of centrally located blade body, again
Blade body two ends edge strength is added, blade is not easily damaged, increase the service life of cutter head.
5. the cutter head that the utility model is provided, the thickness of cutter head end to cutter head root gradually increases, be conducive to improving knife
The bulk strength of head, it is to avoid cutter head is excessively thin to cause cutter head to be broken, endangers personal safety.
6. the cutter head that the utility model is provided, head top surface is the curved surface seamlessly transitted, and this set is easy to what is exploited
Semi-conductive layer is divested along the smooth surface, it is to avoid cutter head produces resistance to the semi-conductive layer that exploitation is fallen in itself, influences feed.
7. the cable exploitation device that the utility model is provided, the cutter head root is arranged on the knife rest, the curved edge
Set suitable for dorsad cable, so that the blade body is supported in the peripheral outer wall face of the cable, and the curved edge
The axis angle of the center line of blade surface and the cable is acute angle, to ensure that blade can exploit the rotation lower edge electricity of device
The axial screw feed of cable, semi-conductive layer helical form is peeled off.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the three-dimensional view of the cutter head provided in embodiment one of the present utility model;
Fig. 2 is the zoomed-in view of the blade shown in Fig. 1;
Fig. 3 is the curved blade provided in embodiment one of the present utility model and the exploitation effect comparison figure of straight sword.
Description of reference numerals:
1- cutter heads end;2- cutter heads root;3- arcuate blades;31- inner arcs;32- outer arcs;4- head base surfaces;5- head top surfaces;
6- cutter heads side;7- insulating barriers;8- semi-conductive layers;9- arc tool marks;10- straight line tool marks.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection;Can be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
As long as in addition, technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can just be combined with each other.
Embodiment one
Fig. 1 is the three-dimensional view of the cutter head provided in embodiment one of the present utility model;Fig. 2 is the blade shown in Fig. 1
End face zoomed-in view;Fig. 3 is the curved blade provided in embodiment one of the present utility model and the exploitation effect comparison figure of straight sword.
As Figure 1-3, the cutter head that the present embodiment is provided, cutter head end 1 is provided with blade, cutter head root 2 and the one of cutter head end 1
Set, it is characterised in that the blade is included positioned at the blade body at middle part and located at the blade body length direction two
The curved edge that the same side holding, towards face where the blade body is bent in opposite directions, and curved edge described in two and the knife
The intersection point of the tangent line of sword body junction, positioned at the blade body on the whole or place face relative to the curved edge
Opposite side, the intersection point be located at face where the blade body relative to the curved edge opposite side when, the friendship
Projection of the point towards the blade body direction is dropped on the blade body.
The present embodiment provide cutter head blade be arcuate blade 3, blade body and two curved edges towards the same side curved arc,
Continuous arc is formed with two curved edges, the radian of the arcuate blade 3 is no more than pi/2, and the arcuate blade 3 is in cable semi-conductive layer
During 8 exploitation operation, shape arc tool marks 9 consistent with arcuate blade 3 can be formed on the surface of insulating barrier 7, cutter head is along cable axial direction spiral shell
Rotation is advanced, by controlling feed velocity to intersect two neighboring arc tool marks 9, to ensure that exploitation is complete, the camber line of point of intersection two
Tangent line angle is obtuse angle, and the camber line of arcuate blade 3 is gentler, and the angle more tends to 180 degree, therefore only needs control feed speed
Degree ensures that two neighboring arc tool marks 9 intersect, and is that the reduction surface spine of cable insulation 7 can be achieved without control depth of cut
Or the effect of raised acuity, the incidence of reduction insulation failure, operate more convenient.
Cable sectional view after exploiting as shown in Figure 3, cutter head carries out spiral exploitation from cable left end to semi-conductive layer 8,
Expose insulating barrier 7, it is that arcuate blade 3 exploits design sketch, straight sword to be exploited wherein above cable axis for straight sword below design sketch, axis
Form straight line tool marks 10 after spiral feed, the intersection angles of adjacent two straight lines tool marks 10 is close to right angle, very sharply, and
The intersection angle of the arc tool marks 9 formed after the spiral feed of arcuate blade 3 is substantially gentle, close to 170 degree.
Specifically, the arcuate blade 3 is axially symmetric structure perpendicular to the end face of length direction, and the end face includes length side
The inner arc 31 and outer arc 32 being connected with each other to two ends, the radian of the outer arc 32 are less than the radian of the inner arc 31, the inner arc
31 are connected by two straight lines parallel with the axis of the end face respectively with the two ends of the outer arc 32.
It should be noted that the arcuate blade 3 that the present embodiment is provided, the specific radian, inner arc 31 of its inner arc 31 and outer arc 32
Radian with outer arc 32 is poor, and the length of arcuate blade 3 can be entered according to the external diameter of cable layer to be exploited, the thickness of layer to be exploited
Row specific design, the present embodiment does not make specific limit to above-mentioned each parameter.
The cutter head that the present embodiment is provided, the outer arc 32 of the arcuate blade 3 prolongs along curved surface where it towards the cutter head root 2
Stretch to form head base surface 4, the inner arc 31 extends towards the cutter head root 2 and the inner arc 31 arrives the cutter head root 2
Thickness gradually increase to form head top surface 5, connect two straight lines at the inner arc 31 and the two ends of the outer arc 32 court respectively
Extend to the cutter head root 2, form two cutter head sides 6, the connection head top surface 5 of cutter head side 6 and the knife
Head bottom surface 4, the head top surface 5 is the curved surface seamlessly transitted, and its arcuate blade 3 is axial symmetry knot perpendicular to the end face of length direction
Structure, the end face includes the inner arc 31 and outer arc 32 that length direction two ends are connected with each other, and the radian of outer arc 32 is less than inner arc 31
Radian, i.e., the thickness of arcuate blade 3 by centre gradually increase to two ends, this set both ensure that centrally located knife
Sword body it is sharp, blade body two ends edge strength is added again, blade is not easily damaged, increase cutter head service life, knife
Cephalic par 1 to the thickness of cutter head root 2 gradually increases, and is conducive to improving the bulk strength of cutter head, it is to avoid cutter head is excessively thin to cause knife
Head rupture, endangers personal safety, also, head top surface 5 is the curved surface seamlessly transitted, and this set is easy to the semiconductive exploited
Layer 8 is divested along the smooth surface, it is to avoid cutter head produces resistance to the semi-conductive layer 8 that exploitation is fallen in itself, influences feed.
It should be noted that the present embodiment is not restricted to the concrete shape of cutter head root 2, and in other embodiments, institute
It can be square, oval or other irregular shapes to state cutter head root 2.
Further, the present embodiment provides a kind of cable exploitation device, including knife rest, and above-mentioned cutter head, the cutter head root
Portion 2 is arranged on the knife rest, and the curved edge is set suitable for dorsad cable, so that the blade body is supported into the cable
In peripheral outer wall face, and the axis angle of the center line of the blade surface of the curved edge and the cable is acute angle, to protect
Demonstrate,prove blade can exploitation device rotation under along cable axial screw feed, the helical form of semi-conductive layer 8 peel off.
It should be noted that the layer to be exploited in the present embodiment is the semi-conductive layer 8 of cable, in other embodiments, also
The cutter head by adjusting the relevant parameter of blade, can be applied to the exploitation of the other layer structures of cable.
Embodiment two
The present embodiment as a kind of substitute mode of embodiment one there is provided a kind of cutter head, the cutter head and the area of embodiment one
It is not:
The cutter head that the present embodiment is provided, the blade body is linear, is connected smoothly with curved edge described in two,
Cut stripping cable semi-conductive layer when, axial screw feed of the cutter head along cable, the blade surface of insulating layer formation shape with
The consistent spill tool marks of cutting edge shape, two neighboring spill tool marks are intersecting to be set, described to ensure that cutting for semi-conductive layer shells complete
Spill tool marks include the tool marks that blade body is cut out, and the curved tool marks that two curved edges are cut out, can during feed
Control feed velocity is intersected with the curved tool marks for ensureing two neighboring spill tool marks, and can be protected by controlling depth of cut
The angle for demonstrate,proving two tangent lines of the point of intersection of two curved tool marks is obtuse angle, or can control during feed feed velocity with
Ensure that the curved tool marks of a spill tool marks intersect with the straight line tool marks of another spill tool marks, and can be by controlling feed
Depth is to ensure the angles of curved tool marks and straight line tool marks as obtuse angle, so that the raised acuity of surface of insulating layer is reduced, it is bent
The curve of shape sword is gentler, and the angle that two curved tool marks are crossed to form more tends to 180 degree, effectively alleviates cable insulation layer surface
Sharp protrusion and spine caused by influence, reduction insulation failure incidence, be conducive to the normal operation of power cable.
Specifically, the curved edge in the present embodiment be each point at curvature identical arc line shaped, curved edge described in two with it is described
The intersection point of the tangent line of blade body junction, the opposite side relative to the curved edge positioned at face where the blade body,
Length range of the intersection point without departing from the blade body, it is ensured that the curved tool marks of the curved edge formation are bent with another
The angle that shape tool marks or straight line tool marks intersect is obtuse angle.
Embodiment three
The present embodiment as a kind of substitute mode of embodiment one there is provided a kind of cutter head, the cutter head and the area of embodiment one
It is not:
The cutter head that the present embodiment is provided, blade is arcuate blade, blade body and two curved edges towards the same side curved arc, with
Two curved edges form continuous arc, and the radian of the arcuate blade is not less than pi/2, and the arcuate blade is exploited in cable semi-conductive layer
During operation, it can advance along cable axial screw, lead in the surface of insulating layer formation shape arc tool marks consistent with arcuate blade, cutter head
Crossing control feed velocity intersects two neighboring arc tool marks, to ensure that exploitation is complete, and the tangent line institute of the camber line of point of intersection two is into folder
Angle is obtuse angle, and the camber line of arcuate blade is gentler, and the angle more tends to 180 degree, and by controlling depth of cut to ensure two
The angle of arc tool marks intersection is obtuse angle, you can realize the effect of reduction cable insulation layer surface spine or the acuity of projection
Really, the incidence of reduction insulation failure, is operated more convenient.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among the protection domain that variation is created still in the utility model.